-
Notifications
You must be signed in to change notification settings - Fork 10
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: Alex Flom <[email protected]>
- Loading branch information
Showing
7 changed files
with
142 additions
and
50 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| # -*- mode:python; coding:utf-8 -*- | ||
|
|
||
| # Copyright (c) 2020 IBM Corp. All rights reserved. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # https://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| """Common logging utilities.""" | ||
| import argparse | ||
| import logging | ||
| import sys | ||
| from types import TracebackType | ||
| from typing import Optional, Type | ||
|
|
||
| # Singleton logger instance | ||
| # All other CLI sub module will inherit settings of this logger as long as | ||
| # sub-module instantiates a logger with a prefix 'trestlebot' or __name__ | ||
| _logger = logging.getLogger('trestlebot') | ||
|
|
||
|
|
||
| class SpecificLevelFilter(logging.Filter): | ||
| """ | ||
| Filter for the same level as provided by setLevel for a log handler. | ||
| Python by default logs all levels above to a given destination. This makes it easy to split levels where you might | ||
| log all levels to file and only errors to std.err, however, does not allow logging a specific level elsewhere. | ||
| """ | ||
|
|
||
| def __init__(self, level: int) -> None: | ||
| """Initialize providing maximum level to be pushed through the filter.""" | ||
| self._level = level | ||
|
|
||
| def filter(self, log_record: logging.LogRecord) -> bool: # noqa: A003 | ||
| """Filter log messages.""" | ||
| return log_record.levelno == self._level | ||
|
|
||
|
|
||
| def set_global_logging_levels(level: int = logging.INFO) -> None: | ||
| """Initialise logging. | ||
| Should only be invoked by the CLI classes or similar. | ||
| """ | ||
| # This line stops default root loggers setup for a python context from logging extra messages. | ||
| # DO NOT USE THIS COMMAND directly from an SDK. Handle logs levels based on your own application | ||
| _logger.propagate = False | ||
| # Remove handlers | ||
| _logger.handlers.clear() | ||
| # set global level | ||
| _logger.setLevel(level) | ||
| # Create standard out | ||
| console_out_handler = logging.StreamHandler(sys.stdout) | ||
| console_out_handler.setLevel(logging.INFO) | ||
| console_out_handler.addFilter(SpecificLevelFilter(logging.INFO)) | ||
|
|
||
| console_debug_handler = logging.StreamHandler(sys.stdout) | ||
| console_debug_handler.setLevel(logging.DEBUG) | ||
| console_debug_handler.addFilter(SpecificLevelFilter(logging.DEBUG)) | ||
|
|
||
| console_error_handler = logging.StreamHandler(sys.stderr) | ||
| console_error_handler.setLevel(logging.WARNING) | ||
| # create formatters | ||
| error_formatter = logging.Formatter('%(name)s:%(lineno)d %(levelname)s: %(message)s') | ||
| debug_formatter = logging.Formatter('%(name)s:%(lineno)d %(levelname)s: %(message)s') | ||
| console_debug_handler.setFormatter(debug_formatter) | ||
| console_error_handler.setFormatter(error_formatter) | ||
| # add ch to logger | ||
| _logger.addHandler(console_out_handler) | ||
| _logger.addHandler(console_error_handler) | ||
| _logger.addHandler(console_debug_handler) | ||
|
|
||
|
|
||
| def _exception_handler( | ||
| exception_type: Type[BaseException], exception: BaseException, traceback: Optional[TracebackType] | ||
| ) -> None: | ||
| """Empty exception handler to prevent stack traceback in quiet mode.""" | ||
| logging.warning(exception) | ||
|
|
||
|
|
||
| def _get_trace_level() -> int: | ||
| """Get special value used for trace - just below DEBUG.""" | ||
| return logging.DEBUG - 5 | ||
|
|
||
|
|
||
| def set_log_level_from_args(args: argparse.Namespace) -> None: | ||
| """Vanity function to automatically set log levels based on verbosity flags.""" | ||
| if args.verbose > 1: | ||
| # these msgs only output by trace calls | ||
| set_global_logging_levels(_get_trace_level()) | ||
| elif args.verbose == 1: | ||
| set_global_logging_levels(logging.DEBUG) | ||
| else: | ||
| set_global_logging_levels(logging.INFO) | ||
| sys.excepthook = _exception_handler | ||
|
|
||
|
|
||
| def get_current_verbosity_level(logger: logging.Logger) -> int: | ||
| """Get the current verbosity level based on logging level.""" | ||
| level = logger.getEffectiveLevel() | ||
| if level < logging.DEBUG: | ||
| return 2 | ||
| elif level == logging.DEBUG: | ||
| return 1 | ||
| return 0 | ||
|
|
||
|
|
||
| class Trace(): | ||
| """Class allowing low priority trace message when verbose > 1 and log level below DEBUG.""" | ||
|
|
||
| def __init__(self, logger: logging.Logger) -> None: | ||
| """Store the main logger with its module name.""" | ||
| self._logger = logger | ||
|
|
||
| def log(self, msg: str) -> None: | ||
| """Output the trace msg if log level is below DEBUG.""" | ||
| level = self._logger.getEffectiveLevel() | ||
| if level < logging.DEBUG: | ||
| self._logger.debug(msg) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters